Rotary washing-machine



G. BINDER.

ROTARY wAsHms MAcHiNE.

APPLICATION FILED MAR. 3l, 1920.

1,389,182, -i ,PatentedAug 30,1921.

2 SHEETS-SHEET 1 WIT/V555.'

PATENT OFFICE.

eo'r'rLoB BINDER, or PFALMYRA, NEW JERSEY.

ROTARY WASHING-,MACHINE To all lwhom t may concern.'

yBe it known that I, Go'r'rLoB BINDER, a citizen of the United` States, residing at Palmyra, county of Burlington, and State Iof New Jersey, have invented a new and- `useful Improvement in Rotary Washingiuachines', of which the following is a full,

1 clear, and exact-description, reference being had to the accompanyin drawings, which 'form a part of this speci cation.

. My invention relates to washing machines' 'i of the rotary drum type and has for,` its obtional views of ject to increase the efficiency and speed of operation of the washer. p

Washing machines of this character are especially adapted to the washing of a variety of articles, including wearing apparel andhousehold fabrics, that are cleaned in public service steam laundries.

My invention comprises a cylinder containing radially extending members of such width, so formed and shaped as to elevate the goods to a maximum height and at the same time submit them to a rubbing and scrubbing action analogousto thait obtained in the use of thelong familiar household washboard. y

A preferred embodiment of my invention is shown in the accompanying drawings, whereiny 1 Figure 1 is a side elevation, partly broken away, of a complete washer.

d Fig. 2 is a cross-section through the cylin.- er. l

Fig. 3 is a detail perspective view of a part o fbthe cylinder wall and one of the scrubbing r1 s.

Fig. 4 is an enlarged side view, partly in section, of one of the scrubbing ribs.

Flgs. 5, 6, 7 9 and 10 are enlarged secmodifications, each showing a rib embodying my invention. and a small part of the periphery of the cylinder.

Fig. 8 is an enlarged perspective view of aportio'n of a hollow corrugated perforated r1 The washer comprises, as usual, an outer tub a, an inner cylinder b, a driven gear c on the shaft of the cylinder, and a drain pipe al connected underneath with'the space between the tub and the cylinder.

The cylinder is providedv with perforations e. Extending longitudinally of the cylinder and' projecting inwardly from its inner wallsare aplurality of wooden ribs f.

Secured to each base rib f is a hollow cor- Speciication of Letters Patent. i Patented Aug, 30, 1921 applicati@ mea March 3'1, 1920. serial No. 370,094. i

rugated supplemental rib g. This rib comprlses a plate bent into a form that 'is oval in cross-section and applied to the rib f so as to 1nclose, and project substantially beyond, the free inner end of the rib f.

In constructin va rib g, I prefer to take a sheet of thm flexible metal, such as brass or any other rust-resisting material, and corrugate the same longitudinally throughout a large part of its width, the parts near op- `posite s1de edges being uncorrugated. The

corrugated .sheet is then bent upon itself as shown 1n Fig. `The uncorrugated parts h of the sheet adJacent the Iedges extend par- .allel to each other vat i, while the corrugated part of the sheet swells outward away from the parts z, and then inwardly toward each other and meet at the center of the rib. Within the oval shaped inclosure formed by so bending the corrugated sheet are a plurality of reinforcingwebs m. These webs are shaped to conform to the shape of said inclosure, being cut away to fit the outer portion of the wooden rib j", and preferably also flanged along the edges n, n. The reinforcing webs are secured within the'hollow corrugated ribs by soldering or otherwise. The sheet metal structure described is thus adapted-tofit over and engage one of the wooden ribs f, as shown in Fig. 4, and may be retainedin place without any securing means. If desired, the ends of the rib g may be confined within marginal strips o secured to opposite end walls of the` cylinder.

The structure described exhibits certain pronounced advantages. The space at one `sideof each compound rib f g and adjacentforty-five degrees of the top, thereby dropping the goods from a maximum height; and hence securing'the most effective tumblingaction and the greatest amount of friction between different surfaces of the goods. As the goods slide back and forth over the corrugated surfaces of the ribs g, they are subjected toa rubbing or scrubbing operation similar to that produced by rubbing the goods over a flat washboard, as in hand washing. The pressureof the rubbing or scrubbing action is increased by reason of the convexity of the vsurface of the corrugated rib.

While in ordinary rotary drum washers, it

while I `but 1s made in one piece.

is often found necessary to examine the` goods carefully after they are removed from the washer and subject parts of the goods not thoroughly cleansed to a special hand scrubbing operation, a washer constructed i' feature of my invention. I prefer such con-v struction largely because thereby I can apply my invention to a washer of the most used type without reconstructing the latter. Other specific constructions, within the skill of the mechanic, may be preferred in the manufacture of entirely new washers. Again,

prefer to employ a perforated cylinder and solid ribs, the invention is not limited to these features. Any convenient means for allowing a flow of water, suitably distributed, between the inside and outside of the cylinder, may be adopted.

The projections are of convex form, from their inner ends to a point between the ends, so that the clothes will be subjected to a scrubbing action by all of the corrugations on the one face each of the projection.

On the second sheet of drawings, I have illustrated several of a number of permissible modifications of my invention.

In Fig. 5, the specially made corrugatedv rib 'p is secured direct to the cylinder b and is solid with parallel sides. It may be made out of metal, but if solid it would preferably be made out of wood.

In Fig. 6, the corrugated rib r secured to the cylinder b2 has the external conformation of the compound rib shown in Fi 4, If made ho ow, as shown, it would preferably be made out of metal.

In Fig. 7, the corrugated rib s secured to that it expedites'the washingr the cylinder b is of triangular shape in cross-section' and is hollow and rovided with perforations t, asr shown in ig. 8, to allow the passage of water therethrough.

The cyllnders are shown in the preceding figures as of substantial thickness and are intended to be made out of wood. I The cylinder may be made relatively thin and out of metal, as shown at b4 and b, Figs. 9 and 10. The rib may be made solid, as shown at t in Fig. 9, or hollow and perforated as shown at u inFig. 10.

While I have referred to the cylinder as rotatab1e, it will be understood that I meant to comprehend by lthis term a'cylinder which is oscillatable on its axis; my invention being applicable, for example, not only to large A lic service steam laundries, but also .to electrically operated household washing machines of either the rotary or oscillatable ty e.

llaving now fully described my invention, what I claim and desire to protectby Letters Patent is 1. A washing machine comprising a cylinder, a pluralit of longitudinal ribsextending ina radia direction from the inner face of the cylinder, said ribs being of general loval form, the diameter of said ribs being greater between the ends than at the ends and having longitudinal corrugations arran ed to be engaged by articles being was ed, the inner face of the cylinder between the ribs being of concave form.

2. In a washing machine, the combination with a rotatable cylinder, of a base rib projecting inward from the wall of the cylinder, a corrugated plate bent to form a hollow supplemental rib inclosing and extending beyond the free inner end of the base rib, and a reinforcing web within the hollow supplemental rib and-cut away to fit the inner free end of the base rib.

In testimony of which invention, I have hereunto set my hand, at Philadelphia, Penna., on this 30th day of March, 1920.

GOTTLOB BINDER.

washing machines used in pub-, 

